Sash-holder and burglar-alarm.



C. C. LOTT.

SASH HOLDER AND BURGLAR ALARM.

APPLICATION FILED 0CT.29. 191s. RENEWED JUNE 28.1915.

1,150,528. Patented Aug. 17, 1915.

Inventor Attorneys NET CHARLES C. LOTT, OF HATTIESZBURG, MISSISSIPPI.

SASH-HOLDER AND BURGLAR-ALARL'LVL Specification of Letters Patent.

Patented Aug. 1?, 1915.

Application filed October -29, 1913, Serial No. 798,118. Renewed June 28, 1915. Serial No. 36,911.

To all whom it may concern:

Be it known that 1, CHARLES C. LOTT, a citizen of the United States, residing at Hattiesburg, in the county of Forrest and State of Mississippi, have invented a new and useful Sash-Holder and Burglar-Alarm, of which the following is a specification.

This invention relates to an improved form of sash holder and burglar alarm.

An object of the present invention is to provide a sash holder provided with two cam-shaped surfaces which are adapted to contact with the sashof a window and hold the same in any desired raised position and furthermore to hold and lock the same against further raising.

A further object of the present invention is to provide a sash holder with a plunger slidably secured thereto and which plungerprojects beyond the cam surface of )the holder so that it will when the window is raised contact with the window sash and be moved inwardly to complete an electric circuit which includes an alarm bell, the latter giving warning that an attempt is being made to raise the window. 7

A further object is to provide a sash holder and burglar alarm which comprises two cam-shaped surfaces spaced a distance apart and between which extends a pivotal member engaging the window frame so that either one of the two cam surfaces may be brought into contact with the window sash, the lower cam surface preventing a raising of the window, and the upper cam surface when swung into contact with the said sash, preventing a lowering thereof.

lVith the foregoing and other objects in view which will appear as the description proceeds, the invention residesin the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodimentof the invention hereindisclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the drawings accompanying this specification and forming a part thereof, the preferable embodiment of my invention is illustrated in which Figure 1 is a plan'view of my improved sash holder and burglar alarm operably secured to a window frame and engaging the sash, the two latter members being fragmentally illustrated. Fig.2 is a plan view of the forcible attempt is in registration therewitl.

bearing and holding plate. Fig. 3 is a cross sectional view taken on the line 3-3 of 1. Fig. 4 is a fragmental view illustrating in section the portion 41 of Fig. 1.

Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several views, a portion of a window frame is illustrated at 5 and slidably engaging which is the sash 6. My improved sash holder and burglar alarm is secured to the window frame 5 and frictionally engages the sash 6 to prevent the raising and lowering thereof and also to close an electric circuit when made to raise the window.

An attaching plate 7 illustrated in plan .in Fig. 2 is provided with four openings 8 in the corners thereof, through which the screws 9 extend for the securing of the plate to the window frame The attaching plate further includes the opening 10 and spaced grooves 11 and 12. A sash engaging member 12 is substantially heart-shaped in outline and is provided with the opening 13 extending therethrough and which opening is positioned on the longitudinal axis of the said member and through which passes a holding screw 14: whereby the said sash engaging member is mounted for rotation. The pivot screw 1% passes through the opening 10 of the attaching plate and secures the sash engaging member thereto. The member 12 is provided with two openings 15 and 16 extending therethrough and through which openings extend the pins 17. To each of the pins 17 is secured a spring member 18 which as illustrated in Fig. 3 is provided with the loop 19 and is secured at its remote end to a set screw 20. The spring 18 which engages the pin 17 holds the lat ter in forced contact with the attaching plate 7 and is adapted to move the said pin down to a seated position within the grooves 11 and 12. thereof when the said pins come The upstanding loop 19 of the spring affords means whereby the spring may be engaged and the pins moved upwardly out of the grooves 11 and 12 which will then allow the sash engaging member to rotate freely about the pivot 14:. Extending around the cam-shaped surfaces 21 and 22 of the sash engaging member is the strip 22' of some resilient and pliable material such as soft rubber, and which is secured thereto by the screws 23. The strip of soft pliable material 22 is adapted to contact with the sash 6 and provides for the requisite amount of friction between the same and the sash engaging member. In order that the sash holder will also act in the capacity of a burglar alarm and close an electric circuit when attempt is made to forcibly open the window, the plunger 24; is provided, the one extremity of which projects beyond the cam surface 22 of the sash engaging member and is provided at its extremity wih a soft cushion 25 which is adapted to contact with the sash 6 when the sash engaging member 12 is being rotated due to the fact that the window is being raised. The plunger 24 is held for rectilinear motion by means of the bearing 26 and which also efiects an electrical connection therewith, to which is secured the wire 27 of an electrical circuit which includes a source of electrical energy 28 and an alarm sounding means or bell 29. A. rod 30 is slidably held to the sash engaging member and is arranged in the path of movement of the plunger 24: so that when the plunger is moved by reason of its contact with the sash 6 it will contact and effect an electrical circuit with the rod 30, and inasmuch as the latter is included in the electrical circuit 27, the alarm bell 29 will be sounded. As illustrated in Fig. 1 the rod 30 may be adjusted by reason of the clip 31 which holds it to the member 12. From the foregoing, it will be apparent that the heart-shaped sash engaging member 12 may be rotatedabout the pivot 14 (in this connection it is mentioned that the distance between the pivot 14 and the sash is relatively less than the distance between the pivot and the cam surface 21 and 22) into the position as illustrated in full lines in Fig. 1, in which position the lower surface 22 will contact with the window sash 6 and while allowing the window to be lowered will prevent the same from being raised. hen it is desired to hold the window in a raised position, the said member is rotated to the position as illustrated in dotted lines and in which position it will be noted that the window will be prevented from being lowered, while at the same time allowing the same to be easily raised.

When it is desired to hold the window against raising and to bring the alarm circuit into operative position the sash engaging member will be brought into the position as illustrated in full lines in Fig. 1 and should the window then be forcibly raised the friction between the sash and the sash engaging member will be such that the member will be rotated through a slight distance it being observed that the greater force used or exerted in raising the window, the more effectively will the window be locked against such motion. However the compressibility of the strip 22 allows for a slight rotation of the sash engaging member with the result that the cushion 25 will be compressed, thereby moving the plunger 24 inwardly and into contact, with the metallic rod 30 to effect an electrical connection therebetween and the closing of the electric circuit and sounding of the alarm bell 29. When the window is again lowered and the sash engaging member returned to its original position, the resiliency of. the cushion 25 will move the plunger outwardly and out of contact with the rod 30. The pins 17 by reason of their engagement with the grooves 11 and 12, hold the sash engaging member into frictional contact with the sash with either the cam surface 21 or 22 contacting with'the sash. The sash engaging plate 12' may be made of some insulating material or it may be provided with a veneer of'the latter should it be so desired.

Having thus described my invention, what I claim as new is 1. In a device of the class described, the combination with a window frame and sash, of a plate pivotally secured to the frame and provided with two outwardly extending portions positioned above and below the pivotal mounting of the plate and adapted to successively and frictionally engage the window sash, means for holding the outwardly extending portions of the plate in frictional engagementwith the sash, and a plunger secured to the lower outwardly extending last mentioned member for the closing of the alarm circuit when the plunger contacts therewith.

2. The combination with a window frame and sash, of an attaching plate secured to the said frame, a sash engaging member pivotally secured to the said attaching plate and provided with outwardly extending portionsadapted to frictionally engage the sash at points above and below the pivotal con nection of the sash engaging member, means carried by the said sash engaging member coacting with the attaching plate, adapted to holdthe outwardly extending portions of the sash engaging member in frictional contact with the saidsash, a plunger slidably secured to the lower outwardly extending portion of the sash engaging member adapted to contact with and be moved by the sash when the sash engaging member is rotated by raising the sash, a stop arranged in the path of movement of the plunger, an elec trical circuit including a source of energy and alarm sounding means electrically connected to the plunger and stop, the plunger sounding of the alarm by contacting With the said stop.

3. In a combination burglar alarm and sash holder, an attaching plate securable to the Window frame, a heart-shaped sash engaging plate pivotally secured to the said attaching plate, a pivotal connection eX- tending through the longitudinal axis of the sash engaging plate, the said sash plate adapted to engage the Window sash above and below its pivotal connection, said attaching plate provided with spaced grooves, pins extending through the said sash engaging plate adapted to engage the grooves to hold the upper and lower portions of the sash engaging plate into frictional engagement with the Window sash, resilient means engaging the said pins adapted to hold the same into forced contact With the attaching plate to move the same forcibly into the grooves When they come in registration there- With, and means carried by the lower outwardly extending portion of the sash engaging plate adapted to contact With the sash for the closing of an electric alarm circuit. In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of tWo Witnesses.

CHARLES C. LOTT. Witnesses:

D. M. GATENo, M. RILEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. 0. 

